C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen

C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen

C08G18/67—Unsaturated compounds having active hydrogen

C08G18/69—Polymers of conjugated dienes

Abstract

1,253,757. Laminates. NIPPON SODA CO. Ltd. 13 Aug., 1969 [31 Aug., 1968; 26 Sept., 1968], No. 40481/69. Heading B5N. [Also in Divisions B1-B2, C2 and C3] An adhesive for laminating steel sheets coinprises a butadiene polymer resin characterized in that at each tip of the polymer an ethylenically unsaturated group is attached to the chain through a urethane, amido or carbamido group and in that more than 30% of the butadiene units are in the 1, 2 configuration, a vinyl monomer such as styrene, and a peroxide. Suitable resins are the reaction product of polybutadiene diol and the reaction product of hydroxyethyl methacrylate and toluene diisocyanate; and the reaction product of hydroxyethyl methacrylate and the reaction product of excess toluene diisocyanate and polybutadiene diol. The adhesive may be used for bonding wood, metals, glass, rubber and plastics.